9/16" x 21" Simpson SDS-MAX Concrete Drill Bit, Carbide Tip, Pkg 1 Smooth Shank - Common Nail This will only fit a

This will only fit a post that measures an actual 10x10"

The Type-17 point style allows for easy installation with a drill or screw gun and requires no predrilling

the LSC simplifies stair construction while delivering dependable structural performance

Flat head with ribs provides clean countersinking in wood

No predrilling required – Drives easily through double 14 ga

9/16" x 21" Simpson SDS-MAX Concrete Drill Bit, Carbide Tip, Pkg 1 Smooth Shank - Common Nail This will only fit aStrong Tie SDS MAX masonry drill bits feature a durable carbide tip and are designed for use in concrete, brick and block applications. California Residents: WARNING